Importing textured psd into blender not showing correct colors in blender
Even though PSD is not presently listed among Blender's supported image formats, it is partially supported. Some PSD features will work and some will not.

Excerpt from the link Ray Mairlot has provided:


  What works:
  
  
  8-bit images (with or without alpha)
  16-bit images (alpha discarded)
  Photoshop files saved with 'Maximum Compatibility'
  Cycles, Blender internal,  BGE (and player)
  
  
  Known limitations
  
  (due to OIIO dependency):
  
  
  Images with less than 4 channels show a wrong thumbnail (bug may be in  OIIO)
  Packed images are not supported
  We do not write PSD files.
  


So if you want to be sure your images will work in blender, you can either:


Export your texture in a fully supported format instead, such as EXR, TIFF, JPEG, or PNG. (If it contains transparency data, use PNG, EXR, or TIFF.)


-OR-


Stay within to the guidelines of "What Works" to keep your PSD files compatible.